Expression profile of water-soluble proteinases during ontogenesis of Megachile rotundata: an electrophoretic investigation Antonio Felicioli, Elena Donadio, Ettore Balestreri, Giorgio Montagnoli, Romano Felicioli and Adriano Podestà Apidologie, 35 6 (2004) 595-604 DOI: 10.1051/apido:2004064